as a white guy theres a huge difference between using nigger and nigga nigger is almost exclusively used by racists and in a deragatory manner and is rarely used by black people although i have heard black people use nigger in a derogatory fashion towards other black people whereas nigga is used in a more friendly way nigga on the other hand is used in tons of songs and is said by black people quite often which makes it fine for white people to use in context such as singing a song that has the word nigga as a song lyric it obviously would not be okay for a white person or anyone to call someone a nigga or nigger in a derogatory manner